package cn.sylinx.horm.util;

public abstract class ClassUtil {

    private ClassUtil() {
    }

    public static boolean isClassExist(String className) {
        try {
            Class.forName(className, false, getDefaultClassLoader());
        } catch (Throwable e) {
            GLog.warn("class:" + className + " load error");
            return false;
        }
        return true;
    }

    public static ClassLoader getDefaultClassLoader() {
        ClassLoader cl = null;
        try {
            cl = Thread.currentThread().getContextClassLoader();
        } catch (Throwable ex) {
            // Cannot access thread context ClassLoader - falling back...
        }
        if (cl == null) {
            // No thread context class loader -> use class loader of this class.
            cl = ClassUtil.class.getClassLoader();
            if (cl == null) {
                // getClassLoader() returning null indicates the bootstrap ClassLoader
                try {
                    cl = ClassLoader.getSystemClassLoader();
                } catch (Throwable ex) {
                    // Cannot access system ClassLoader - oh well, maybe the caller can live with
                    // null...
                }
            }
        }
        return cl;
    }
}
